The BOJ will eventually run out of domestic bonds to buy (at around 50% now) They also hold almost 80% of japanese ETFs.

What happens when they buy all 100% of ETFs and bonds? Venezuela?

https://www.japanmacroadvisors.com/page/category/economic-in...

https://www.zerohedge.com/news/2017-09-11/wtf-chart-day-boj-...